[Isovolemic relaxation of the intact left ventricle and the energy efficiency of the cardiac cycle].
To compare left ventricle (LV) function during isometric relaxation (IR) and energy parameters of LV contraction, 22 patients with a rejected diagnosis of coronary heart disease (CHD) were examined. All the test subjects underwent coronary angiography, direct left ventriculography by means of a special catheter equipped at the end with a pressure microtransducer, and intravenous biventriculography with injection of a radiocontrast substance to the right atrium coupled with continuous monitoring of the pressure in the LV. All the ventriculograms were subjected to multipicture analysis using computer. It has been established that the energy effectiveness of the cycle of LV contraction is in a reverse agreement with the volume of ventricle filling during IR. Therefore, the assessment of LV function during IR (that can be performed by noninvasive technique either) allows one to form a judgement about the energy of pump heart function in a real clinical situation.
Savchenko
A P
AP
Smirnov
A A
AA
Abugov
S A
SA
Mar'iamova
I A
IA
D000328:Adult; D000787:Angina Pectoris / Q000175:diagnosis / Q000503:physiopathology; D002306:Cardiac Volume / Q000502:physiology*; D017023:Coronary Angiography; D003327:Coronary Disease / Q000175:diagnosis / Q000503:physiopathology; D004526:Efficiency / Q000502:physiology*; D004734:Energy Metabolism / Q000502:physiology*; D005260:Female; D006352:Heart Ventricles / Q000000981:diagnostic imaging; D006439:Hemodynamics / Q000502:physiology; D006801:Humans; D008297:Male; D009200:Myocardial Contraction / Q000502:physiology*; D013997:Time Factors; D016277:Ventricular Function, Left / Q000502:physiology*
Izovoliumicheskoe rasslablenie intaktnogo levogo zheludochka i énergeticheskaia éffektivnost' kardiotsikla.